# 1N4148WSX

**Shenzhen JingYang** · Diodes - General Purpose · SOD-323

1N4148WSX from Shenzhen JingYang, in a SOD-323. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode of the diode; the datasheet shows pin 1 as CATHODE, with a 75 V working peak reverse voltage (VRRM/VRWM/VR) and 100 V non-repetitive peak reverse voltage (VRM). |
| 2 | A | passive | Anode of the diode; the datasheet shows pin 2 as ANODE, with 150 mA average rectified output current (Io) and a forward voltage of 1.25 V max at IF=150 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen JingYang |
| Package | SOD-323 |
| Category | Diodes |
| Pins | 2 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Reverse Breakdown Voltage | V(BR)R | 75 |  |  | V | IR=1.0μA | 2 |
| Forward Voltage | VF |  |  | 0.715 | V | IF=1.0mA | 2 |
| Forward Voltage | VF |  |  | 0.855 | V | IF=10mA | 2 |
| Forward Voltage | VF |  |  | 1 | V | IF=50mA | 2 |
| Forward Voltage | VF |  |  | 1.25 | V | IF=150mA | 2 |
| Reverse Current | IR |  |  | 1 | μA | VR=75V | 2 |
| Reverse Current | IR |  |  | 25 | nA | VR=20V | 2 |
| Junction Capacitance | CJ |  |  | 2 | pF | VR=0, f=1.0MHz | 2 |
| Reverse Recovery Time | trr |  |  | 6 | ns | IF=IR=10mA, Irr=0.1×IR, RL=100Ω | 2 |
| Non-Repetitive Peak Reverse Voltage | VRM |  |  | 100 | V |  | 1 |
| Peak Repetitive Reverse Voltage | VRRM |  |  | 75 | V |  | 1 |
| Working Peak Reverse Voltage | VRWM |  |  | 75 | V |  | 1 |
| DC Reverse Voltage | VR |  |  | 75 | V |  | 1 |
| RMS Reverse Voltage | VR(RMS) |  |  | 53 | V |  | 1 |
| Average Rectified Output Current | Io |  |  | 150 | mA |  | 1 |
| Non-Repetitive Peak Forward Surge Current | IFSM |  |  | 2 | A | @t=1.0 μs | 1 |
| Non-Repetitive Peak Forward Surge Current | IFSM |  |  | 1 | A | @t=1.0 s | 1 |
| Power Dissipation | Pd |  |  | 200 | mW |  | 1 |
| Thermal Resistance Junction to Ambient Air | RθJA |  |  | 625 | ℃/W |  | 1 |
| Operating and Storage Temperature Range | Tj,TSTG | -65 |  | 150 | ℃ |  | 1 |

## CAD (KiCad official)

- Symbol: `1N4148WSX`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `1n4148wsx-etched.step` / `1n4148wsx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `1n4148wsx.step` / `1n4148wsx.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Shenzhen JingYang datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590906322836021248) (3 pp, sha256 `fc3b8c35da217921`, retrieved 2026-10-23, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/1n4148wsx-datasheet.pdf)